Some of the most comfortable running shoes in the adidas lineup, they have the Boost midsole and adidas Primeknit upper that Ultraboost is known for. This pair also has something extra: a Linear Energy Push system. It offers forefoot and midfoot support, giving you an extra push of energy in each step. This product is made with Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic. 50% of the upper is textile, 75% of the textile is Primeblue yarn. No virgin polyester.